JIPC 20th Oct. 1995

"Electromagnetic Distribution of Multilayer Printed Circuit"
- Analysis of coupling to other layers -
Hiroaki KOGURE, Keisuke OGAWA, Hideki NAKANO
Kohji KOSHIJI and Eimei SHU

JIPC(Japan Institute for Interconnecting and Packaging Electronic Circuit)

(Modeling of the structure)

(Crosstalk under Vcc plate S31, S41: Sonnet "em")

(Radiation from the PCB: KCC "Micro-Stripes")

Abstract Recently we spent too much to re-design circuits and fabrications because of the requirements of large integration and the multilayer printed circuit. It is so difficult to measure characteristics between the layers by a probe, especially a back side of smaller multilayer structure. The circuit theory gives less accurate answers in these structures. This paper deals with the electromagnetic distribution analysis of multilayer printed circuit using two different EM analyses, Sonnet "em" by the Method of Moments and KCC "Micro-Stripes" by the Transmission-Line Modeling Method. These two different algorithm produce many useful basic information about coupling to other layers and crosstalk problems.